Submission #274365

#	Time	Username	Problem	Language	Result	Execution time	Memory
274365		egekabas	Santa Claus (RMI19_santa)	C++14	0 / 100	614 ms	33616 KiB

santa

#include <bits/stdc++.h>
#define all(x) (x).begin(), (x).end()
#define ff first
#define ss second
#define pb push_back
#define mp make_pair
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef pair<ll, ll> pll;
typedef pair<ull, ull> pull;
typedef pair<int, int> pii;
typedef pair<ld, ld> pld;
int n;
struct node{
    int x, h, v;
} a[500009];

pii seg[2000009];
set<pii> s[500009];
void build(int v, int tl, int tr){
    if(tl == tr){
        s[tl].clear();
        seg[v] = {1e9, tl};
        return;
    }
    build(2*v, tl, (tl+tr)/2);
    build(2*v+1, (tl+tr)/2+1, tr);
    seg[v] = min(seg[2*v], seg[2*v+1]);
}
void upd(int v, int tl, int tr, int idx){
    if(idx < tl || idx > tr)
        return;
    if(idx == tl && idx == tr){
        if(s[tl].empty())
            seg[v].ff = 1e9;
        else
           seg[v].ff = s[tl].begin()->ff;
    }
    else{
        upd(2*v, tl, (tl+tr)/2, idx);
        upd(2*v+1, (tl+tr)/2+1, tr, idx);
        seg[v] = min(seg[2*v], seg[2*v+1]);
    }
}
pii get(int v, int tl, int tr, int l, int r){
    if(tr < l || r < tl)
        return {1e9, 1e9};
    if(l <= tl && tr <= r)
        return seg[v];
    else{
        return min(
        get(2*v, tl, (tl+tr)/2, l, r),
        get(2*v+1, (tl+tr)/2+1, tr, l, r)        
        );
    }
}
int used[500009];
int ans[500009];
int mem[500009];
void solve(){
    cin >> n;
    int latest = 0;
    for(int i = 0; i < n; ++i)
        cin >> a[i].x;
    for(int i = 0; i < n; ++i){
        cin >> a[i].h;
        if(a[i].h == 0) latest = i;
    }
    for(int i = 0; i < n; ++i){
        cin >> a[i].v;
        used[i] = -1;
        mem[i] = n+3;
    }
    build(1, 0, n);
    set<pii> pr;
    set<pii> bef;
    set<pii, greater<pii>> kids;
    for(int i = 0; i <= latest; ++i){
        ans[i] = -1;
        if(a[i].h)
            kids.insert({a[i].v, i});
        else
            pr.insert({a[i].v, i});    
    }
    int j = 0;
    for(int i = latest; i < n; ++i){
        if(j > latest){
            ++j;
            continue;
        }
        if(a[i].h){
            pii cur = {a[i].v, i};
            pii oth = get(1, 0, n, cur.ff, n);
            if(oth.ff < cur.ff){
                s[oth.ss].insert(cur);
                cur = *s[oth.ss].begin();
                s[oth.ss].erase(s[oth.ss].begin());
                upd(1, 0, n, oth.ss);
            }
            kids.insert(cur);
        }
        while(pr.size()){
            pii cur = *pr.begin();
            if(kids.lower_bound({cur.ff, 1e9}) != kids.end()){
                pii ki = *kids.lower_bound({cur.ff, 1e9});
                kids.erase(kids.lower_bound({cur.ff, 1e9}));
                s[cur.ff].insert(ki);
                upd(1, 0, n, cur.ff);
                used[ki.ss] = cur.ss;
                mem[cur.ss] = ki.ss;
                pr.erase(pr.begin());
            }
            else break;
        }
        while(j <= i && pr.empty()){
            if(a[j].h == 0){
                bef.insert({a[j].v, j});
                ++j;
            }
            else if(used[j] == -1){
                kids.erase({a[j].v, j}); 
                ++j;
            }
            else{
                s[a[used[j]].v].erase({a[j].v, j});
                upd(1, 0, n, a[used[j]].v);
                pr.insert({a[used[j]].v, used[j]});
                mem[used[j]] = n+3;
                used[j] = -1;
                if(bef.lower_bound({a[j].v, 0}) != bef.end()){
                    int nxt = bef.lower_bound({a[j].v, 0})->ss;
                    bef.erase({a[nxt].v, nxt});
                    pr.erase({a[nxt].v, nxt});
                    if(mem[nxt] != n+3){
                        s[a[nxt].v].erase({a[mem[nxt]].v, mem[nxt]});
                        upd(1, 0, n, a[nxt].v);
                        kids.insert({a[mem[nxt]].v, mem[nxt]});
                        used[mem[nxt]] = -1;
                        mem[nxt] = j;
                    }
                }
                while(pr.size()){
                    pii cur = *pr.begin();
                    if(kids.lower_bound({cur.ff, 1e9}) != kids.end()){
                        pii ki = *kids.lower_bound({cur.ff, 1e9});
                        kids.erase(kids.lower_bound({cur.ff, 1e9}));
                        if(ki.ss > n) continue;
                        s[cur.ff].insert(ki);
                        upd(1, 0, n, cur.ff);
                        used[ki.ss] = cur.ss;
                        mem[cur.ss] = ki.ss;
                        pr.erase(pr.begin());
                    }
                    else break;
                }
                ++j;
            }
        }
        if(j == 0)
            ans[i] = -1;
        else{
           //cout << i << ' ' << j-1 << '\n';
            ans[i] = 2*a[i].x-a[j-1].x;
        } 
    }
    for(int i = n-1; i >= 1; --i)
        if(a[i].x == a[i-1].x)
            ans[i-1] = ans[i];
    for(int i = 0; i < n; ++i)
        cout << ans[i] << ' ';
    cout << '\n';
}
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    
    //freopen("in.txt", "r", stdin);
    //freopen("out.txt", "w", stdout);

    int t;
    cin >> t;
    while(t--){
        solve();
    }
}

• Subtask 1: 0 / 100